Method for determining rock nonlinear constitutive relation based on artificial intelligence

• Main Authors: YANG CHAOSHUAI, YOON GUN HO, ZHANG DANFENG, LI JING, HOU JINGTONG, PAN YUE, SHANG WEI, YU JIAWU, WANG HUA, XU TENG, HONG KAIRONG, LIN CHUNGANG, LONG WENHUA, XIE TAO, ZHANG LIMENG
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a rock nonlinear constitutive relation determination method based on artificial intelligence, and a rock compression process control parameter selection method comprises the following steps: sequentially dividing deformation of a rock compression process into a first stage, a second stage, a third stage and a fourth stage according to a rock stress-strain curve; when the first stage is converted into the second stage, the corresponding stress value and strain value are sigma A and epsilon A respectively; when the second stage is converted into the third stage, the corresponding stress value and strain value are sigma B and epsilon B respectively; the deformation modulus of the second stage is E; when the third stage is converted into the fourth stage, the corresponding stress value and the corresponding strain value are sigma C and epsilon C respectively, and when the fourth stage is ended, the corresponding stress value and the corresponding strain value are sigma D and epsilon D resp